58results about How to "Save input cost" patented technology

The present invention relates to a mobile Internet parking management method and system. The mobile Internet parking management method includes the following steps that: a server receives a reservation parking request sent by a client and generates reservation information according to the reservation parking request and allocates a reserved parking space; when a reservation automobile arrives at the entrance of a parking lot according to a reservation, the server searches the reservation information according to automobile information uploaded by the entrance of the parking lot and instructs the entrance of the parking lot to carry out parking according to the reservation information; when the automobile leaves, the server calculates parking fees of the automobile and sends fee payment information to the client so as to prompt the user to pay the fees; and after the server receives online fee payment of the client, a current parking process is terminated. With the mobile Internet parking management system of the invention adopted, the user can carry out registration and make a reservation in advance, the registration and reservation are directly recorded through the system, an unoccupied parking space is reserved; and when an automobile is being parked, the system automatically identifies whether the automobile is a reservation automobile. With the mobile Internet parking management method and system adopted, a situation that a large number of parking space guidance and automobile searching devices are installed in a parking lot can be avoided, investment cost and system maintenance cost can be saved.

The invention provides a chambering -forging forming method for an aluminum alloy hub with a complex structure and a die thereof. The forming method comprises the steps of: preparing for materials; heating blanks; upsetting; mould-pressing and chambering a rim. The die for realizing the chambering-forging forming method for the aluminum alloy hub with the complex structure comprises a forging die and a rim-chambering die, wherein an upper die of the forging die consists of an upper die body and an upper die core which are sequentially nested and mounted, a lower die consists of a lower die body, a lower die core and an ejector rod which are sequentially nested and mounted; and the bottom and the side wall of the assembling part of the lower die core and the lower die body are uniformly provided with 4-8 R3 penetrating exhaust grooves, the rim-chambering die consists of an upper chambering die and a lower chambering die, and the size of a cavity of the upper chambering die is same as the size of the cavity of the upper die core of the forging die. The invention realizes once-heating forming; a non-burr forging and rim-chambering forming process is adopted, thus two trimming procedures are eliminated, material utilization rate is improved, and number of equipment is reduced; and the rim-chambering die has a simple structure and is convenient for operation.

A method for continuously producing fuel oil from waste lubricating oil is featured as carrying out treatment of stewing, setting, dewatering and impurity removing for raw material oil to separate out water and mechanical impurities, adding absorbent, catalytic cracking catalyst, molecular weight regulator, sending raw material oil with overheated steam into tube heater after heat exchanging and separating oil gas from heater outlet with fractionating column for obtaining different fue oil.

The invention discloses a detector-sprinkler-based movable automatic fire-extinguishing system. The detector-sprinkler-based movable automatic fire-extinguishing system at least comprises a system power supply, a movement mechanism, a fire-extinguishing medium reservoir, a fire-extinguishing medium driving source, a sprinkler, a fire detector and a main controller. The system power supply provides electric energy by a storage battery. An output end of the storage battery is connected to the movement mechanism, the fire detector, the main controller and the fire-extinguishing medium driving source and provides work energy for the whole detector-sprinkler-based movable automatic fire-extinguishing system. An output end of the fire detector is connected to an input end of the main controller so that fire alarm information is transmitted to the main controller. An output end of the main controller is divided into two lines. One of the two lines is connected to an input end of the movement mechanism and controls the movement mechanism to move according to a certain track; and the other one of the two lines is connected to an input end of the fire-extinguishing medium driving source. Pressure output by the fire-extinguishing medium driving source is transferred to an input end of the fire-extinguishing medium reservoir and drives a fire-extinguishing medium in the fire-extinguishing medium reservoir to the sprinkler. The fire-extinguishing medium is spayed on a fire source by the sprinkler so that fire-extinguishing is realized.

The invention discloses a method for detecting the diameter of a rotary jet grouting pile. Whether the upper and lower parts of a rotary jet grouting pile to be detected are consistent in diameter is judged by comparing the upper and lower points of the pile in such aspects as sonic time, amplitude of first wave and curve integrity, the detection result is processed to get the diameters at different points, and the obtained diameters of the rotary jet grouting pile are verified by use of a calculation formula. The detection result is more accurate and reliable, and the construction parameters can be changed in a timely manner in the process of construction to make the upper and lower parts of the rotary jet grouting pile consistent in diameter. Through the detection method, quick nondestructive detection of the diameter of a rotary jet grouting pile is realized, money and cost are saved, and deviation can be corrected in time according to the detection result to ensure the engineering quality.

The invention relates to the technical field of shielding films, in particular to an electromagnetic shielding film and a preparation method thereof, comprising a carrier film, an insulating layer, a metal layer, a conductive adhesive layer and a release film arranged sequentially from bottom to top, and the lower surface of the insulating layer and the upper surface are attached to the upper surface of the carrier film and the lower surface of the metal layer respectively, and the lower surface and the upper surface of the conductive adhesive layer are respectively attached to the upper surface of the metal layer and the lower surface of the release film. The electromagnetic shielding film of the invention has the advantages of simple structure, good electromagnetic shielding effect and low cost. Compared with vacuum coating and measurement and control sputtering, the preparation method of the present invention has high production efficiency, can dispense with coating-related equipment, reduces production space, and saves input and production costs.

The invention provides a white rot fungus rot agent and a method for producing an organic pollutant rot agent by using white rot fungi. In the method, the white rot fungi are obtained in a large quantity through industrial production and used as a treating agent for waste water, sewages and excrements of paper mills, textile mills, printing and dyeing mills, food factories, livestock and poultry factories, and the like, can also be used as a quick rot agent of composts prepared from farmland straws applied to farmlands and straw pollutions and has higher economic values and good application prospects. The invention also provides an application of the white rot fungi used as a waste water treating agent. The production method of the white rot fungi comprises the following steps of: putting a culture medium in a culture container; after sterilization at a proper temperature, inoculating the white rot fungi to the culture medium and controlling the temperature, the humidity, the pressure and the pH condition of the culture medium; introducing sterile air; adsorbing by using attapulgite, peat, kaolin, and the like after culturing; drying by air or drying in the shade; and pulverizing to prepare into a solid or powdered finished product.

The invention discloses an electric vehicle charging station based on electricity generation by reforming hydrogen production fuel cells. The electric vehicle charging station includes a total storagedevice, a centralized liquid supply system and a plurality of fuel cell electricity generation systems. The total storage device is used for storing hydrogen-containing fuel in the charging station,and the centralized liquid supply system is used for conveying the hydrogen-containing fuel stored by the total storage device to a hydrogen production system to produce hydrogen. Each fuel cell electricity generation system includes a fuel cell generator set and an electric vehicle charging pile. The fuel cell generator sets use the hydrogen produced by the hydrogen production system to perform electrochemical reactions to generate electricity, and the electric vehicle charging piles store generated electric energy which is used for charging electric vehicles. Through layout of the charging station which use hydrogen compounds as raw materials and use the fuel cell generator sets to generate the electricity, charging for the battery-based home electric vehicles without the need to re-laya dedicated transmission network in a large area is realized, and initial investment costs and construction time are saved; and the problem of inconvenient charging during long-distance travel of theelectric vehicles is solved.

The invention discloses centralized recovery processing equipment for copper powder of multiple circuit board surface brushing machines. Copper-containing wastewater produced by the washing and brushing sections of multiple circuit board surface brushing machines converges and flows into a first pipe and then into a copper powder sedimentation basin through the first pipe; the copper-containing wastewater naturally settles in the copper powder sedimentation basin, and copper powder settles in the bottom of the copper powder sedimentation basin; with the increase of the copper-containing wastewater, the upper part of the copper powder sedimentation basin is relatively clear while the liquid containing copper powder floatage overflows from an overflow port and flows into a pressure filter to be subject to pressure filtering; the pressure filter presses the copper powder floatage into filter cakes and recovers the filter cakes; and the clear water filtered by the pressure filter flows into an overflow water centralization basin, and the clear water in the overflow centralization basin is returned to the washing and brushing sections of the circuit board surface brushing machines to be reused. Circularly used in the such way, the centralized recovery processing equipment for copper powder of multiple circuit board surface brushing machines has the advantages that the cost and labor are saved, the production efficiency and quality are improved and simple structure, low cost and easy implementation are ensured.

The invention relates to an anti-counterfeiting technology, especially to a motor vehicle certificate digital anti-counterfeiting method and the anti-counterfeiting system thereof. The digital anti-counterfeiting method employs a combination method of dot matrix technology, data master key, working key double encryption technique and network data authentication technology. The system is composed of a data server, a data storing device, an application server, a telephone network or a network, a query terminal, a maintaining workstation, a local network, a code reading device, a laser printer and a certificate printing terminal. By network or telephone network, each user can check the truth of any motor vehicle certificate, which completely solves the current problems of false certificate, counterfeiting certificate and indiscriminate use of certificate, effectively strikes illegal activity of logging in illegal assembled vehicles, servers for economic construction, and improves people's life security.

The invention discloses an externally-assisted vibrating feeder which comprises a feeding compartment body, the underside of one end of the feeding compartment body is erected on an installed crusher driving shaft mechanism through a docked connecting rod device, and the other end of the feeding compartment body is erected on an installed crusher rack through an adjustable supporting device. According to the invention, through skillfully using the linked fixed installation of the feeder and a crusher, synchronously operating and using realistic conditions, removing a vibration exciter and adding a docked connecting rod device, a feeding operation is completed by using an exciting force generated by the rotary motion of the crusher driving shaft mechanism. In such a way, the feeder becomes extremely concise and light, the equipment manufacturing and running costs are greatly reduced, and the application and maintenance of the feeder are more convenient. Due to the versatility of the docked connecting rod device, the docked connecting rod device can be widely matched with different types of crushers (such as impact crushers and hammer crushers) for using purpose.

The invention discloses a preparation method and application of a low-cost high-purity graphite material. The preparation method comprises the following steps: pretreating waste graphite powder to obtain graphite powder of which D50 is less than or equal to 10 microns; the preparation method comprises the following steps: preparing active powder A from graphite powder, carbon/carbon powder and asphalt; then preparing active powder B from green coke and asphalt; mixing the active powder A, the active powder B and high-temperature asphalt to prepare pressed powder; a green body block is obtained through a pre-mold pressing-gradient isostatic pressing forming process; roasting the green block at 800-1200 DEG C for 2-4 hours, cooling to 200-300 DEG C, and naturally cooling to room temperature to obtain a roasted block; and placing the roasted block in a vacuum graphitization furnace for atmosphere protection, treating at 2500-2800 DEG C for 2 hours, cooling to 200-300 DEG C, and naturally cooling to room temperature to obtain the high-purity graphite material. According to the preparation method, the graphite waste powder is adopted as the aggregate, so that the raw material cost can be effectively reduced, the additional value of the high-purity graphite waste powder can be improved, dipping and repeated roasting are not needed, the preparation process is simple, the production period can be effectively shortened, and the production cost can be reduced.

The invention discloses an energy-saving processing method for wastewater generated during the liquor brewing process. The processing method comprises the following steps: (1) filtering the big floating dregs in liquor brewing wastewater with mechanical gratings; (2) then introducing the wastewater filtered by mechanical gratings into a comprehensive tank; (3) introducing the water discharged from the comprehensive tank into an anaerobic baffle-plate reactor; (4) introducing the water discharged from the anaerobic baffle-plate reactor into a medium precipitation tank; (5) introducing the water discharged from the medium precipitation tank into a composite vertical flow artificial wetland system, wherein in the artificial wetland system, pollutants such as organisms, SS, ammonia nitrogen, and the like in the wastewater are further degraded by the combined action of wetland substrate, microorganisms, and plants, and finally discharging the processed wastewater. The processing method can effectively remove the pollutants such as organisms, ammonia nitrogen, SS, and the like, in the liquor brewing wastewater on the basis of low equipment investment and operation management fee, moreover the water quality of the processed wastewater meets the I-grade discharge standard of the industry, and a novel method is provided for energy-saving treatment of liquor brewing wastewater.

The invention provides an end cam lift detection device. The end cam lift detection device is characterized in that the end cam lift detection device comprises a working bench, a detection assembly, a clamping assembly, a power rotation assembly, and an installation base installed on the workbench; the end cam lift detection device is capable of precisely detecting the lift of an end cam and has important significance for improving a lift curve of the end cam and further improving the oil supplying rule of a VE dispensing pump; the end cam lift detection device serving as a detection device which is low in cost, high in detection precision and simple in operation fills the gap in the field in China, effectively determines and controls the machining quality effect of the end cam and also substantially saves capital investment and production cost for an enterprise; in addition, the detection system can be used for online detection and product inspection of a production field, so that the recording of product quality, and the storage and management of quality data are convenient.

The invention discloses a control method for air cooling bainite steel bloom bending. The control method comprises the steps of casting bloom conveying, casting bloom discharging and casting bloom slow cooling, wherein the casting bloom slow cooling step adopts a close-packed stacking mode for slow cooling. According to the control method, under the condition that no device is additionally arranged, the purposes of reducing the cast bloom curvature, equipment investment, maintaining cost and production cost are achieved; the curvature of an air cooling bainite steel bloom is effectively controlled, the curvature of the casting bloom is not larger than 3 mm per meter, the process is simple and reliable, and the quality defect that the curvature of the casting bloom is prone to exceeding the standard in the casting bloom discharging and cooling processes during production is overcome.

The invention provides a gas-liquid-dual-purpose safety valve discharge capacity test device. Another technical scheme is that the invention provides a gas safety valve discharge capacity test method based on the gas-liquid-dual-purpose safety valve discharge capacity test device. Another technical scheme is that the invention provides a liquid safety valve discharge capacity test method based on the gas-liquid-dual-purpose safety valve discharge capacity test device. Liquid and air safety valve discharge capacity test benches are combined organically, and a corresponding operation process flow is specially made for a safety valve test system, thereby effectively saving construction land, device investment and maintenance cost and the like.

The invention discloses a road traffic intelligent control system that comprises a vehicle license recognition module, a radar speed measuring module, an LED display module and a control host. The vehicle license recognition module, the radar speed measuring module and the LED display module are connected with the control host. The vehicle license recognition module comprises a camera and a vehicle license recognition device connected with the camera. The radar speed measurement module comprises a radar speedometer. The LED display module comprises a speed limit display part, a vehicle license number display part and a speed display part. The vehicle license recognition module, the radar speed measurement module and the LED display module are all mounted on a control bracket and the bottom of the control bracket is connected to a base. The base can guarantee stability in use, can be easily taken out when required to be disassembled, can be cyclically utilized to save manpower and cost investment.

A lithium ion battery capacity detection and direct current internal resistance detection method comprises the following steps: placing a battery on a capacity DCIR detector, fully charging the battery with a 1C current in a constant current and constant voltage mode, putting the battery aside, completely discharging the battery with a 1C current in a constant current mode, and recording the discharge capacity as C; putting the battery aside after the capacity detection is completed, and performing constant-current charging on the battery by using 20-80% of the shipment state-of-charge SOC ofthe battery, the charging quantity being the shipment SOC; and putting the battery aside, discharging the battery with a 3C current in a constant current mode, putting the battery aside, and chargingthe battery with a 3C current in a constant current mode, wherein the capacity DCIR detector can calculate points at will in the discharging and charging process, and a DCIR value is obtained by calculating the voltage difference and the current difference. According to the invention, capacity detection and DCIR (Direct Current Internal Resistance) detection are completed by one device, the production efficiency is high, only one action of putting the battery on a cabinet and taking the battery down from the cabinet and one grading action need to be carried out, and the device investment cost,the later maintenance cost and the labor hour cost of operators are saved.

The invention discloses a totally-enclosed split type powder metallurgy soft magnetic tank which is characterized by comprising base plates, a plurality of laminated circular magnetic ring shield walls and a magnetic core, wherein the laminated circular magnetic ring shield walls are installed between the two base plates; the magnetic core is formed by laminating a plurality of cylinder bodies; the magnetic core is fixed to central shafts of the magnetic ring shield walls; winding spaces are formed between the magnetic ring shield walls and the magnetic core; the center of the magnetic core is provided with a fixed hole; a bolt penetrates through the fixed hole for fixing the magnetic core to the two base plates; and line outlet grooves are arranged on the base plates or the magnetic ring shield walls. The totally-enclosed split type powder metallurgy soft magnetic tank can solve the technical problem that the electromagnetic compatibility and the magnetic leakage flux can not be guaranteed because a coil is exposed out of a magnet by winding the coil on a circular iron powder core or a square split iron core in the prior art.

The invention belongs to the field of an electrical quantity transducer and relates to a power generator electrical quantity transducer based on Hart communication technology. A digital sampling unitis used for measuring data; an electric energy pulse output unit is connected with the digital sampling unit, and the electric energy pulse output unit is used for carrying out amplification and shaping and photoelectric isolation output on output electric energy pulse signals of the digital sampling unit; an FSK modulation and demodulation unit is connected with a main control unit, and the FSK modulation and demodulation unit is used for sending and receiving data of a Hart protocol; a current loop unit is connected with the main control unit and the FSK modulation and demodulation unit, andthe current loop unit is used for outputting 4-20mA current; a digital communication unit is connected with the main control unit, and the digital communication unit is used for sending and receivingdata of an RS485 electrical protocol; and a display unit is connected with the main control unit. The power generator electrical quantity transducer can solve the problems that two-way digital communication cannot be realized and cost is high.

The invention relates to the field of environment protection equipment, and particularly relates to a sludge drying integrated machine. The sludge drying integrated machine comprises a machine body, gear type spiral push shafts, a bracket, a condensate water circulating device, a drive system, an air cleaning system and an automatic temperature control system. The air cleaning system is arranged on the machine body. The two gear type spiral push shafts parallel to each other and the automatic temperature control system are arranged in the machine body. Two ends of the machine body are respectively provided with a heat conducting medium inlet and a heat conducting medium outlet, and two ends of the gear type spiral push shafts are respectively provided with a heat conducting medium inlet and a heat conducting medium outlet. The machine body is horizontally arranged on the bracket. The condensate water circulating device is arranged below the bracket. The drive system is arranged at one end of the gear type spiral push shafts. The sludge drying integrated machine achieves an integrated process of sludge drying, achieves low energy consumption and high efficiencies in the operation process, and adopts a fully-automatic operation mode without the need of a specially-assigned person for watching.

The invention discloses a security market data high-speed access and forwarding platform, which comprises a market interface module used for acquiring basic market data of Levell and Level2; a strategy interface module which is used for providing a group of capabilities of locally operating a user writing strategy through the strategy interface module and realizing a quantification function basedon the strategy interface module; and an UI component module which can support the broker client to directly use the interface in the UI component to display the market data of the level 2. Based on the platform provided by the invention, a broker can save expensive hardware investment cost and operation and maintenance cost in the aspect of Level2 quotation, and obtain Level2 quotation service superior to that of a self-built machine room system; and the platform has the advantages of higher speed, lower delay, stable performance and the like in butt joint with the level2 market.

The invention provides a crane telescoping control device, which comprises an emergency control valve group. The emergency control valve group comprises a first electromagnetic change valve and a second electromagnetic change valve. The oil port (P1) of the first electromagnetic change valve is communicated with the oil circuit of a telescopic cylinder. The oil port (T1) of the first electromagnetic change valve is communicated with the oil circuit of the telescopic cylinder through a non-return valve. The oil port (P2) of the second electromagnetic change valve is communicated with the oil port (A1) of the first electromagnetic change valve. The oil port (T2) of the second electromagnetic change valve is communicated with the oil port (B1) of the first electromagnetic change valve. The oil port (A2) of the second electromagnetic change valve is communicated with the oil cylinder of the cylinder pin mechanism of a crane. The oil port (B2) of the second electromagnetic change valve is communicated with the oil cylinder of the arm pin mechanism of the crane. In a normal state, the first electromagnetic change valve is taken as the main control valve and is used to control the switching of the cylinder pin and the arm pin, and once the first electromagnetic change valve is trapped in a lower position, the second electromagnetic change valve is taken as the auxiliary control valveto control the switching of the cylinder pin and the arm pin.

The invention relates to the field of environmental protection equipment, in particular to a gear type sludge dryer which comprises a dryer body, gear type spiral pushing shafts, a support, a condensation water circulation device, a driving system, an air purification system and an automatic temperature control system, wherein the air purification system is arranged above the dryer body; the two gear type spiral pushing shafts placed in parallel and the automatic temperature control system are arranged in the dryer body; heat conducting medium inlets and heat conducting medium outlets are formed at the two ends of the dryer body and the gear type spiral pushing shaft; the dryer placed in parallel is arranged above the support; the condensation water circulation device is arranged below the support; and the driving system is arranged at one end of the gear type spiral pushing shaft. The dryer realizes an integrated sludge drying work process, as well as low energy consumption and high efficiency during operation, and is in a full automatic unattended operation mode.

The invention relates to the field of environment protection equipment, and particularly relates to a rotating extrusion type sludge dewatering machine. The sludge dewatering machine comprises a machine body, gear type spiral push shafts, a bracket, a condensate water circulating device, a drive system, an air cleaning system and an automatic temperature control system. The air cleaning system is arranged on the machine body. The two gear type spiral push shafts parallel to each other and the automatic temperature control system are arranged in the machine body. Two ends of the machine body are respectively provided with a heat conducting medium inlet and a heat conducting medium outlet, and two ends of the gear type spiral push shafts are respectively provided with a heat conducting medium inlet and a heat conducting medium outlet. The machine body is horizontally arranged on the bracket. The condensate water circulating device is arranged below the bracket. The drive system is arranged at one end of the gear type spiral push shafts. The machine achieves an integrated process of sludge drying, achieves low energy consumption and high efficiencies in the operation process, and adopts a fully-automatic operation mode without the need of a specially-assigned person for watching.

The invention discloses a ribbon type hoisting pipe clamp which comprises a main body part and an adjustable part, wherein the main body part and the adjustable part are connected through a fixed connecting end and a self-locking connecting end; the main body part and the adjustable part are assembled and connected to form a closed inner hole; the adjustable part is made from a flexible material.Pipelines of various specifications can be fixed with only one pipe clamp, so that all water supply pipelines and similar pipelines for indoor decoration are fixed fully, in particular pipelines coated with insulating cotton. Different compression degrees are caused by insulating cotton of different thicknesses and hardness. Different outer dimensions are available after being held tightly. The pipe clamp is more convenient to use. Compared with a conventional pipe clamp, production and manufacturers can reduce the equipment input cost (molds) as one only specification product is available, and operations such as deploying a production scheduling machine, replacing the mold and the like are also reduced. As far as a mounting constructor is concerned, it is simpler to purchase and prepare cargoes, the quantity is more precise and the mounting process is also simpler and more convenient.

The invention discloses a mine electromechanical equipment fault diagnosis support system based on crowd sensing, which is characterized in that the diagnosis support system comprises a fault request processing module, a fault preliminary diagnosis module, an expert diagnosis module and a maintenance scheduling module. The system can standardize and standardize the fault database and the fault processing flow of the electromechanical equipment of the coal mine enterprise, guides and trains maintainers through the settled equipment fault knowledge database, standardizes the maintenance site, and truly achieves site 5S management; and an electromechanical equipment and equipment fault library in an existing ERP of a coal mine enterprise is fully integrated with PLC data/production scheduling data of production, and the research is data fusion and deepened application which are already constructed at present instead of repeated informatization construction.

The invention belongs to the field of environmental protection equipment, and specifically relates to a full-automatic sludge drier. The full-automatic sludge drier comprises a machine body, two gear-type spiral drive shafts, a support, a condensate water circulating device, a driving system, an air cleaning system, and an automatic temperature control system; the air cleaning system is arranged above the machine body; the two gear-type spiral drive shafts are arranged in the machine body in parallel; the automatic temperature control system is arranged in the machine body; the two ends of the machine body and the two gear-type spiral drive shafts are all provided with heat-conducting medium inlets and imported medium outlets; the machine body is arranged on the upper part of the support in parallel, and the lower part of the support is provided with the condensate water circulating device; and the driving system is arranged on one ends of the gear-type spiral drive shafts. The full-automatic sludge drier is capable of realizing integration process of sludge drying; energy consumption of operation process is low; efficiency is high; and guardless automatic operation is realized.

The invention discloses an automatic multi-side rotating printing machine. The automatic multi-side rotating printing machine comprises a rack, a working regulating table, an upward and downward linear sliding rail device, a leftward and rightward shuttling sliding rail device, a grid arm device and a printing head module device, wherein the working regulating table is arranged at the upper end ofthe rack, the upward and downward linear sliding rail device is arranged at one side of the rack, the leftward and rightward shuttling sliding rail device is arranged at one side of the upward and downward linear sliding rail device, the grid arm device is arranged on a fixing plate at the lower end of the leftward and rightward shuttling sliding rail device, the printing head module device is arranged on a fixing plate at the upper end of the leftward and rightward shuttling sliding rail device, printing head left and right cylinders are arranged at the other side of the printing head moduledevice, and a sliding servo motor is arranged at one side of the printing head left and right cylinders. The multi-side printing technical process is simplified to a large extent, the printing process is simpler, and the operation is more convenient, so that multi-side printing is finished in a time, the working efficiency is increased, and the production cost is reduced. Besides, as multi-side printing can be finished at a time, the multi-side printing production efficiency is increased.